MLX90255-BA
Linear Optical Array
MLX90255BA Electrical specifications
All tests are made with 0.7ms integration time at 25°C at 880nm and with a clock speed of 500kHz in,
250kHz out, and 500kHz, unless otherwise specified in the Test Conditions. 100% light under Test
Conditions means that the light is set in such a way that there is 2.4V at the output of the chip.
Parameter
Symbol Test Conditions
Min
Typ
Max
Units
Sensitivityꢀforꢀdevicesꢀwithꢀglasꢀlidꢀ Sensitivityꢀ Atꢀ25°Cꢀ
Sensitvityꢀforꢀopenꢀdevicesꢀꢀ
0.135ꢀ 0.151ꢀ 0.179ꢀ
V/ꢂW/ꢀ
cm2ꢀ
0.14ꢀ
0.14ꢀ
ꢀ
0.16ꢀ
0.176ꢀ
14ꢀ
0.19ꢀ
0.21ꢀ
ꢀ
PolyimideꢀWaferꢀ
Illuminationꢀ(1)ꢀ
Illum100ꢀ Atꢀ25°C,ꢀ2.4Vꢀatꢀoutputꢀ
ꢂW/cm²ꢀ
Averageꢀanalogꢀoutputꢀ(1)ꢀ
Averageꢀanalogꢀoutputꢀ
Averageꢀanalogꢀoutputꢀ
HighestꢀDarkꢀPixelꢀ
NonꢀLinearityꢀ
VaoLightꢀ Atꢀ25°C,ꢀ100%ꢀlightꢀ
Initialꢀoffsetꢀ Atꢀ25°C,ꢀ0%ꢀlightꢀ
VaoDarkꢀ Atꢀ125°C,ꢀ0%ꢀlightꢀ
VaodarkmaxꢀAtꢀ125°C,ꢀ0.25msꢀintegrationꢀtimeꢀ
Nlao1ꢀ AllꢀTempꢀ
ꢀ
0ꢀ
0ꢀ
ꢀ
2.4ꢀ
0.15ꢀ
0.40ꢀ
ꢀ
ꢀ
Vꢀ
Vꢀ
0.3ꢀ
1.4ꢀ
Vꢀ
0.8ꢀ
Vꢀ
ꢀ
FSꢀ
0.5%ꢀ
4.0%ꢀ
5%ꢀ
1.2%ꢀ
8.5%ꢀ
PixelꢀResponseꢀNonꢀUniformityꢀ(2)ꢀ PRNUꢀ AllꢀTemp,ꢀ100%ꢀlightꢀ
ꢀ
FSꢀ
PixelꢀInteractionꢀTestꢀ(3)ꢀ
NoiseꢀLevelꢀ(4)ꢀ
PITꢀ
Vnꢀ
ATꢀ25°Cꢀ
AllꢀTempꢀ
ꢀ
ꢀ
FSꢀ
ꢀ
3ꢀ
6ꢀ
mVꢀ(RMS)ꢀ
FSꢀ
Holdꢀspec,ꢀsameꢀasꢀPRNUꢀ
OutputꢀSettlingꢀTimeꢀ
ArrayꢀLagꢀ(5)ꢀ
PRNUHꢀ AllꢀTemp,ꢀ100%ꢀlight,ꢀ62.5kHzꢀ
ꢀ
4.0%ꢀ
450ꢀ
8.5%ꢀ
750ꢀ
ꢀ
Tsꢀ
AllꢀTempꢀ
Atꢀ25°Cꢀ
ꢀ
nsꢀ
Alagꢀ
ꢀ
0.5%ꢀ
FSꢀ
DarkꢀSignalꢀNonꢀUniformityꢀ(6)ꢀ
DSNUꢀ Atꢀ25°Cꢀ
Atꢀ125°Cꢀ
ꢀ
80ꢀ
140ꢀ
ꢀ
120ꢀ
440ꢀ
ꢀ
mVꢀ
mVꢀ
Vꢀ
AnalogꢀOutputꢀSaturationꢀ
ꢀ
ꢀ
AllꢀTempꢀ
ꢀ
3.0ꢀ
ꢀ
Changeꢀinꢀsensitivityꢀwithꢀ
Temperatureꢀatꢀ880nmꢀ(7)ꢀ
0.3ꢀ
ꢀ
%/°Cꢀ
OperatingꢀFreeꢀTempꢀ
SupplyꢀCurrentꢀ(8)ꢀ
ꢀ
ꢀ
ꢀ
ꢁ40ꢀ
2ꢀ
ꢀ
125ꢀ
8ꢀ
°Cꢀ
Iddꢀ
5ꢀ
mAꢀ
(0) After power on, the first integration scan is not guaranteed correct. This scan is needed for initializing digital levels on chip. After a SI and 133 proper
CLK signals, the system is fully initialized and all further scans are valid. The next SI will provide a valid scan.
(1) Absolute Light measurements are very test-setup dependent and should be regarded with caution. Relative measurements are possible with 1%
accuracy.
(2) PRNU is defined as the worst case deviation of any PixelValue (pixel 3 till 130) to the average light value. PixelValue = (Vout of a pixel at 100% light
– Vout of same pixel at 0% light) The MLX90255BA has a cosine shaped gain: external pixels have 15% more gain than middle pixels.
(3) PIT = (Vout of pixel 132 @ 10µW – Vout of pixel 132 @0µW) / (Vaverage @10µW – Vaverage @10µW)
(4) Noise: We compare 5 different measurements, normalize them and then take the RMS value.
(5) Array Lag is defined as: (Vaverage 0µW1 Vaverage 0µW2) / ((Vaverage 10µW Vaverage 0µW2). Where 0µW1 is a 0% light level, 1ms after a 100%
light level. (there can still be some light effects). 0µW2 is a 0% light level, 10ms after a 100% light level, which should be a true dark reference.
(6) DSNU is defined as: (max Vout of pixel I @ 0% light) - (min Vout of pixel j @ 0% light) for pixels 3 thru 130
(7) Sensitivity always increases with rising temperature.
(8) Idd is measured with Rload disconnected from the output pin.
390109025502
Rev. 008
Page 4 of 12
Nov/05
MELEXIS [ Melexis Microelectronic Systems ]
